@import 'tailwindcss';

@custom-variant dark (&:where(.dark, .dark *));

/* React Flow — imported here (not in component JS) so @tailwindcss/vite
   doesn't wrap it in a cascade layer, which would lower its specificity
   below Tailwind's own styles and hide nodes/edges. */
@import '@xyflow/react/dist/style.css';

@theme {
  /* ── Brand tokens ─────────────────────────────────── */
  --color-brand-gradient-from: oklch(0.65 0.13 195);   /* #06b6d4 cyan-500 */
  --color-brand-gradient-to: oklch(0.74 0.12 195);     /* #22d3ee cyan-400 */
  --color-brand-dark: oklch(0.145 0.013 264);           /* #101114 */
  --color-brand-dark-card: oklch(0.17 0.01 264);        /* #14161a */
  --color-brand-dark-surface: oklch(0.17 0.01 264);     /* #14161a */
  --color-brand-text-primary: oklch(0.98 0.005 264);    /* #f8fafc */
  --color-brand-text-secondary: oklch(0.63 0.02 260);   /* #8891a0 */
  --color-brand-text-muted: oklch(0.45 0.015 260);      /* #5a6170 */
  --color-brand-border: oklch(0.35 0 0 / 0.06);

  /* ── Semantic color tokens (OKLCH, direct values) ── */
  --color-background: oklch(0.145 0.013 264);           /* dark charcoal #101114 */
  --color-foreground: oklch(0.98 0.005 264);            /* near-white #f8fafc */

  --color-card: oklch(0.178 0.008 264);                 /* #17191d */
  --color-card-foreground: oklch(0.98 0.005 264);

  --color-popover: oklch(0.178 0.008 264);
  --color-popover-foreground: oklch(0.98 0.005 264);

  --color-primary: oklch(0.65 0.13 195);                /* cyan #1ea8c4 */
  --color-primary-foreground: oklch(0.145 0.013 264);   /* dark bg for contrast */

  --color-secondary: oklch(0.22 0.008 264);             /* #212329 */
  --color-secondary-foreground: oklch(0.98 0.005 264);

  --color-muted: oklch(0.22 0.008 264);
  --color-muted-foreground: oklch(0.63 0.02 260);       /* #8891a0 */

  --color-accent: oklch(0.22 0.008 264);
  --color-accent-foreground: oklch(0.98 0.005 264);

  --color-destructive: oklch(0.55 0.22 15);             /* rose #e63359 */
  --color-destructive-foreground: oklch(0.98 0.005 264);

  --color-border: oklch(0.22 0.008 264);
  --color-input: oklch(0.22 0.008 264);
  --color-ring: oklch(0.65 0.13 195);                   /* cyan, matches primary */

  /* ── Radii ───────────────────────────────────────── */
  --radius-sm: 0.5rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* ── Fonts ───────────────────────────────────────── */
  --font-sans:
    'IBM Plex Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI',
    Roboto, sans-serif;
  --font-heading: 'Bricolage Grotesque', system-ui, sans-serif;
  --font-label: 'JetBrains Mono', monospace;

  /* ── Gradients ───────────────────────────────────── */
  --background-image-gradient-brand: linear-gradient(
    135deg,
    oklch(0.65 0.13 195) 0%,
    oklch(0.74 0.12 195) 100%
  );
  --background-image-gradient-brand-hover: linear-gradient(
    135deg,
    oklch(0.58 0.12 195) 0%,
    oklch(0.65 0.13 195) 100%
  );

  /* ── Animations (keyframes inside @theme) ────────── */
  --animate-fade-in: fade-in 200ms ease-out;
  --animate-fade-in-up: fade-in-up 200ms ease-out;
  --animate-slide-in-left: slide-in-from-left 200ms ease-out;
  --animate-slide-in-bottom: slide-in-from-bottom 200ms ease-out;
  --animate-scale-in: scale-in 150ms ease-out;
  --animate-slide-down: slideDown 400ms ease-out;
  --animate-slide-in-right: slideInRight 300ms ease-out;
  --animate-fade-in-right: fadeInRight 400ms ease-out;
  --animate-breathe-glow: breatheGlow 3s ease-in-out infinite alternate;
  --animate-bell-wobble: bellWobble 500ms ease-in-out;
  --animate-fade: fadeIn 300ms ease forwards;

  @keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  @keyframes fade-in-up {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
  }

  @keyframes slide-in-from-left {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
  }

  @keyframes slide-in-from-bottom {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
  }

  @keyframes scale-in {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
  }

  @keyframes slideDown {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
  }

  @keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
  }

  @keyframes fadeInRight {
    from { transform: translateX(30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
  }

  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
  }

  @keyframes breatheGlow {
    from {
      box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.3),
        0 0 20px oklch(0.65 0.13 195 / 0.04);
    }
    to {
      box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.3),
        0 0 30px oklch(0.65 0.13 195 / 0.12);
    }
  }

  @keyframes bellWobble {
    0% { transform: rotate(0deg); }
    20% { transform: rotate(8deg); }
    40% { transform: rotate(-6deg); }
    60% { transform: rotate(4deg); }
    80% { transform: rotate(-2deg); }
    100% { transform: rotate(0deg); }
  }

  @keyframes stagger-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

/* ── Root CSS variables (non-theme: glass, shadows, layout) ── */
:root {
  /* App Shell tokens */
  --sidebar-w: 260px;
  --sidebar-bg: oklch(0.13 0.013 264);
  --sidebar-hover: var(--color-secondary);
  --sidebar-active: oklch(0.65 0.13 195 / 0.10);
  --text-dimmed: oklch(0.42 0.015 260);

  /* Glass system */
  --glass-bg: oklch(0.16 0.01 264 / 0.55);
  --glass-bg-hover: oklch(0.16 0.01 264 / 0.7);
  --glass-border: oklch(1 0 0 / 0.06);
  --glass-border-hover: oklch(1 0 0 / 0.12);
  --glass-blur: blur(16px);
  --glass-blur-strong: blur(20px);
  --glass-blur-light: blur(12px);

  /* Shadow system */
  --shadow-float: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-float-hover: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px oklch(1 0 0 / 0.08);
  --shadow-cyan-glow: 0 8px 32px oklch(0.65 0.13 195 / 0.08);

  /* Easing */
  --ease-out-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Base styles ─────────────────────────────────────── */
@layer base {
  * {
    @apply border-border;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
  }
  *::-webkit-scrollbar {
    width: 6px;
    height: 6px;
  }
  *::-webkit-scrollbar-track {
    background: transparent;
  }
  *::-webkit-scrollbar-thumb {
    background-color: var(--color-border);
    border-radius: 9999px;
  }
  *::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-muted-foreground);
  }

  body {
    @apply bg-background text-foreground font-sans;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
  }
}

/* ── Custom utilities ────────────────────────────────── */
@utility btn-press {
  @apply active:scale-[0.98] transition-transform;
}

@utility text-gradient-brand {
  @apply bg-gradient-brand bg-clip-text text-transparent;
}

@utility glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--shadow-float);
  transition:
    transform 200ms var(--ease-out-smooth),
    border-color 200ms var(--ease-out-smooth),
    box-shadow 200ms var(--ease-out-smooth);
  &:hover {
    transform: scale(1.02);
    border-color: var(--glass-border-hover);
    box-shadow: var(--shadow-float-hover);
  }
}

@utility glass-card-static {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--shadow-float);
}

@utility active-glow {
  animation: breatheGlow 3s ease-in-out infinite alternate;
}

@utility stagger-item {
  opacity: 0;
  animation: stagger-fade-in 350ms var(--ease-out-smooth) forwards;
  animation-delay: calc(var(--stagger-index, 0) * 50ms);
}

@utility rdp-custom {
  @apply text-foreground;
  & .rdp-month { @apply w-full; }
  & .rdp-caption { @apply flex justify-center items-center mb-4; }
  & .rdp-caption_label { @apply text-sm font-medium; }
  & .rdp-nav { @apply flex gap-1; }
  & .rdp-nav_button { @apply h-7 w-7 bg-transparent p-0 opacity-50 hover:opacity-100; }
  & .rdp-table { @apply w-full border-collapse; }
  & .rdp-head_cell { @apply text-muted-foreground font-normal text-xs; }
  & .rdp-cell { @apply text-center text-sm p-0; }
  & .rdp-day { @apply h-9 w-9 p-0 font-normal hover:bg-accent rounded-md transition-colors; }
  & .rdp-day_selected { @apply bg-primary text-primary-foreground hover:bg-primary/90; }
  & .rdp-day_today { @apply bg-accent text-accent-foreground; }
  & .rdp-day_outside { @apply text-muted-foreground opacity-50; }
  & .rdp-day_disabled { @apply text-muted-foreground opacity-50; }
  & .rdp-day_range_middle { @apply bg-accent text-accent-foreground; }
  & .rdp-day_hidden { @apply invisible; }
}

/* ── Layout utilities ────────────────────────────────── */
@layer utilities {
  .app-shell {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    grid-template-rows: 56px 1fr;
    height: 100vh;
    overflow: hidden;
    transition: grid-template-columns 200ms ease;
  }

  .app-shell--collapsed {
    grid-template-columns: 56px 1fr;
  }

  .topbar {
    grid-column: 1 / -1;
  }

  .sidebar {
    min-height: 0;
    overflow-y: auto;
  }

  .main-content {
    min-height: 0;
    min-width: 0;
    /* Each page handles its own scrolling — full-height pages use
       overflow-hidden, scrollable pages use overflow-y-auto */
  }

  @media (max-width: 767px) {
    .app-shell {
      grid-template-columns: 1fr;
    }
  }

  /* Staggered fade-in helper */
  .fade-in {
    animation: fadeIn 0.3s ease forwards;
  }
}

/* ── Sonner toast overrides ──────────────────────────── */
[data-sonner-toast] {
  background-color: var(--color-card) !important;
  color: var(--color-card-foreground) !important;
  border: 1px solid var(--color-border) !important;
  box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.3) !important;
  border-radius: 0.75rem;
  font-family: var(--font-sans);
}

[data-sonner-toast] [data-title] {
  font-family: var(--font-sans);
  font-weight: 600;
}

[data-sonner-toast][data-type='success'] {
  border-color: oklch(0.76 0.15 163 / 0.3) !important;
}
[data-sonner-toast][data-type='success'] [data-icon] {
  color: oklch(0.76 0.15 163);
}

[data-sonner-toast][data-type='error'] {
  border-color: oklch(0.7 0.16 22 / 0.3) !important;
}
[data-sonner-toast][data-type='error'] [data-icon] {
  color: oklch(0.7 0.16 22);
}

[data-sonner-toast][data-type='info'] {
  border-color: var(--color-border) !important;
}
[data-sonner-toast][data-type='info'] [data-icon] {
  color: var(--color-muted-foreground);
}

[data-sonner-toast][data-type='warning'] {
  border-color: oklch(0.82 0.16 85 / 0.3) !important;
}
[data-sonner-toast][data-type='warning'] [data-icon] {
  color: oklch(0.82 0.16 85);
}

[data-sonner-toast] [data-close-button] {
  color: var(--color-muted-foreground);
  border-radius: 0.375rem;
  transition: color 150ms, background-color 150ms;
}
[data-sonner-toast] [data-close-button]:hover {
  background-color: var(--color-accent);
  color: var(--color-accent-foreground);
}

/* ── React Flow dark theme overrides ─────────────────── */
/* React Flow v12 uses --xy-* CSS custom properties for theming.
   Override the defaults to match our Slate & Ice design system. */
.react-flow.dark {
  --xy-background-color-default: transparent;
  --xy-edge-stroke-default: var(--color-border);
  --xy-edge-stroke-selected-default: var(--color-primary);
  --xy-edge-label-color-default: var(--color-muted-foreground);
  --xy-edge-label-background-color-default: var(--color-card);
  --xy-node-background-color-default: var(--color-card);
  --xy-node-color-default: var(--color-foreground);
  --xy-node-border-default: 1px solid var(--color-border);
  --xy-handle-background-color-default: var(--color-border);
  --xy-handle-border-color-default: var(--color-card);
  --xy-minimap-background-color-default: var(--color-card);
  --xy-minimap-mask-background-color-default: oklch(0.22 0.008 264 / 0.6);
  --xy-controls-button-background-color-default: var(--color-card);
  --xy-controls-button-background-color-hover-default: var(--color-accent);
  --xy-controls-button-color-default: var(--color-muted-foreground);
  --xy-controls-button-color-hover-default: var(--color-foreground);
  --xy-controls-button-border-color-default: var(--color-border);
}

.react-flow__controls {
  border-radius: 0.75rem !important;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3) !important;
  overflow: hidden;
}

.react-flow__minimap {
  border-radius: 0.75rem !important;
}

.react-flow__attribution {
  display: none;
}

/* ── Glow edge animations ────────────────────────────── */
@keyframes glow-flow-downstream {
  from { stroke-dashoffset: 40; }
  to { stroke-dashoffset: 0; }
}

@keyframes glow-flow-upstream {
  from { stroke-dashoffset: 0; }
  to { stroke-dashoffset: 40; }
}

.glow-edge-flow-downstream {
  animation: glow-flow-downstream 1s linear infinite;
}

.glow-edge-flow-upstream {
  animation: glow-flow-upstream 1s linear infinite;
}

/* ── Accessibility: Reduce motion ────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}